Building a replica of Faraday's generator

In 1831 Michael Faraday discovered the operating principle of electromagnetic generators. A horseshoe-shaped magnet creates a magnetic field through a disk. When the disk is turned this induces an electric current radially outward from the center toward the rim. The current flows out through the sliding spring contact, to the external circuit, and back into the center of the disk through the axle. In the classical approach, induction seems to be contradictory, this circumstance is expressed in Faraday's paradox, and as in the example of the N-machine, it still leads to disagreement about the exact mechanism. Only the use of the theory of relativity and its application to the correct transformation of the electromagnetic fields solve this contradiction.